Lawn Mower Filters



There are three lawn mower filters that you need to be aware of: air filters, fuel filters, and oil filters.

1. Air Filters.

Air filters must completely strain dust and dirt to protect the engine. It must also deliver a full volume of clean air to ensure correct carburetion. A clogged filter raises engine temperature.

Clean after every 25 hours. It must be done more frequently under dry and dusty conditions.


  1. Remove the knob and cover.
  2. Remove the surrounding spongy pre-cleaner from the air filter.
  3. Clean the dry components by tapping gently.
  4. Wash the pre-cleaner with soap and water. Dry thoroughly. Or blow out using compressed air.
  5. Replace if very worn, dirty, or oily. Use factory specified part number to replace air filters.
  6. Check carburetor.

2. Fuel Filter.

  1. Change fuel filter annually.
  2. Make sure the engine is stopped and cooled down. Spillage could occur. Gas is very flammable.
  3. Turn the fuel shutoff knob so that the points on the knob are facing away from the carburetor to the closed position.
  4. Remove the fuel filter from the fuel lines.
  5. Replace the fuel filter from the fuel lines. Use the original fuel filter when possible.
  6. Install fuel lines on the fuel filter.
  7. Fasten with clamps.

3. Oil Filter

  1. Change oil filter after 100 hours of use or annually, whichever comes first.
  2. Turn the oil filter counterclockwise and remove it.
  3. Apply a thin film of clean oil on the new filter’s seal.
  4. Install the new filter by turning until the seal contacts the mounting surface.
  5. Turn by hand ½ turn.
  6. Run the engine at slow speed for 2 minutes.
  7. Check for any leaks around the filter.
  8. Check the oil level.
  9. Add oil only to the full mark on the dipstick.
  10. Install and tighten dipstick.



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